While the case for the long distance vehicles as G-CPTN says is true there are a lot of companies engaged in the depot based low mileage, multi drop/collection business.
Try
http://www.smithelectricvehicles.com/casestudies.asp
It seems we have to look at some facts that will probably change as electric vehicles grow in popularity.
Electric vehicles are exempt from road tax
Are also exempt from the London Congestion Charge – so if you go into the charging zone on a daily basis this will save you about £2000 a year.
They do not require an annual MOT - find that hard to believe, as they will still have suspension, steering, lights etc.
‘Fuel’ cost is under a penny per mile, some quote 0.04p per mile – I assume they refer to the cost of recharging.
Unlike engines the batteries require no direct maintenance.
Zero emissions
There are drawbacks to these silent vehicles –
Low top speed – limited range – recharging time - initial cost reputed to be about 2.5 times the normal diesel burner and possible increase in accidents due to ‘didn’t hear it coming’.